An Improved Power-Added Efficiency 19-dBm Hybrid Envelope Elimination and Restoration Power Amplifier for 802.11g WLAN Applications

@article{06-Wang, abstract = {A comparison of envelope elimination and restoration (EER) and envelope tracking (ET) is discussed and a "hybrid" wideband EER power amplifier (PA) for the WLAN 802.11g system is proposed. A 60\% efficiency (the output envelope signal power/input dc power) DC-20-MHz wideband envelope amplifier is designed for wideband EER and wideband ET (WBET) applications. A design method is developed to optimize the efficiency of the envelope amplifier for a given peak-to-average ratio and average slew rate of the envelope signal. An experimental "hybrid" Class-E EER system shows an overall efficiency (modulated RF output power/envelope amplifier dc input power) of 36\% and power-added efficiency (the modulated RF output power/envelope amplifier dc input power plus RF input power) of 28\% for a WLAN 802.11g signal at 19-dBm (80 mW) output power at 2.4 GHz. Digital predistortion, time alignment, and memory effect mitigation are implemented. The measured 3\% error vector magnitude exceeds the 802.11g specification for 5\% for a 54-Mb/s modulation signal}, author = {Wang, F. and Kimball, D. F. and Popp, J. D. and Yang, A. H. and Lie, D. Y. and Asbeck, P. M. and Larson, L. E. }, booktitle = {Microwave Theory and Techniques, IEEE Transactions on}, citeulike-article-id = {2755060}, doi = {10.1109/TMTT.2006.885575}, journal = {Microwave Theory and Techniques, IEEE Transactions on}, keywords = {alignment, amplifier, class-e, dpd, eer, envelope, memory, time, tracking, wideband}, number = {12}, pages = {4086--4099}, posted-at = {2008-05-05 04:58:26}, priority = {2}, title = {An Improved Power-Added Efficiency 19-dBm Hybrid Envelope Elimination and Restoration Power Amplifier for 802.11g WLAN Applications}, url = {http://dx.doi.org/10.1109/TMTT.2006.885575}, volume = {54}, year = {2006} }

TY - JOUR ID - 06-Wang L3 - citeulike-article-id:2755060 TI - An Improved Power-Added Efficiency 19-dBm Hybrid Envelope Elimination and Restoration Power Amplifier for 802.11g WLAN Applications T2 - Microwave Theory and Techniques, IEEE Transactions on JF - Microwave Theory and Techniques, IEEE Transactions on VL - 54 IS - 12 SP - 4086 EP - 4099 N2 - A comparison of envelope elimination and restoration (EER) and envelope tracking (ET) is discussed and a "hybrid" wideband EER power amplifier (PA) for the WLAN 802.11g system is proposed. A 60% efficiency (the output envelope signal power/input dc power) DC-20-MHz wideband envelope amplifier is designed for wideband EER and wideband ET (WBET) applications. A design method is developed to optimize the efficiency of the envelope amplifier for a given peak-to-average ratio and average slew rate of the envelope signal. An experimental "hybrid" Class-E EER system shows an overall efficiency (modulated RF output power/envelope amplifier dc input power) of 36% and power-added efficiency (the modulated RF output power/envelope amplifier dc input power plus RF input power) of 28% for a WLAN 802.11g signal at 19-dBm (80 mW) output power at 2.4 GHz. Digital predistortion, time alignment, and memory effect mitigation are implemented. The measured 3% error vector magnitude exceeds the 802.11g specification for 5% for a 54-Mb/s modulation signal KW - alignment KW - amplifier KW - class-e KW - dpd KW - eer KW - envelope KW - memory KW - time KW - tracking KW - wideband AU - Wang, F AU - Kimball, DF AU - Popp, JD AU - Yang, AH AU - Lie, DY AU - Asbeck, PM AU - Larson, LE PY - 2006/// UR - http://dx.doi.org/10.1109/TMTT.2006.885575 ER -